Patent US2964314A successfully refreshed from Google Patents.
Patent US4200976A successfully refreshed from Google Patents.
US4200976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaving units
Assignee: Warner Lambert Co LLC
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Filing: 1977-11-14
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Granted: 1980-05-06
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Expires: 1997-11-14
Abstract
Abstract A shaving unit comprises an open framework to which at least one razor blade is secured by its ends, the razor blade having a cutting edge spaced at a predetermined distance from one surface of the framework which provides a guard surface for the cutting edge. The framework also has supporting surfaces within the boundaries of the framework to which intermediate portions of the razor blade are attached leaving substantial lengths of the razor blade clear of the framework to permit the unimpeded passage of cut hairs and shaving soap past the cutting edge and thence through the open framework.
Inventors
- 👤 Trevor F. Gooding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:16
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/22; B26B21/222
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
A shaving unit comprising an open framework having a front edge, a rear edge, two end portions and at least one web extending between the front edge and the rear edge intermediate said end portions, a razor blade having a cutting edge spaced at a predetermined distance from said front edge, said front edge providing a guard surface for the cutting edge of said razor blade, the ends of said razor blade being secured to respective ones of said end portions and a portion of said razor blade intermediate its end being secured to said web, said web being positioned in a plane parallel to said end portions and being stepped in the area where said razor blade is secured thereto, the cutting edge of said razor blade protruding past the front edge of said step.
Claim 2
Dependent Claim
136 words
A shaving unit comprising an open framework having a front edge, a rear edge, two end portions and at least one web extending between the front edge and the rear edge intermediate said end portions, a razor blade having a cutting edge spaced at a predetermined distance from said front edge, said front edge providing a guard surface for the cutting edge of said razor blade, the ends of said razor blade being secured to respective ones of said end portions and a portion of said razor blade intermediate its end being secured to said web, said web being positioned in a plane parallel to said end portions and being stepped in the area where said razor blade is secured thereto, the cutting edge of said razor blade protruding past the front edge of said step.
Claim 3
Dependent Claim
46 words
A shaving unit according to claim 1, comprising at least two blades having a width not greater than 2.0 millimeters, each having a cutting edge and the cutting edges being so positioned relative to said front edge and to one another that they provide successive cutting.
Claim 4
Dependent Claim
34 words
A shaving unit according to claim 1, comprising three uniformly spaced webs extending between said front edge and said rear edge, the respective portions of said razor blade adjacent the webs being secured thereto.
Claim 5
Dependent Claim
31 words
A shaving unit according to claim 1, wherein said open framework comprises a plastics moulding carrying a metal member, the metal member having surfaces to which said razor blade is attached.
Claim 6
Dependent Claim
33 words
A shaving unit according to claim 1, wherein each blade is of rectangular cross-section having a width within the range of about 0.8 to 2.0 millimeters and a thickness of about 0.1 millimeters.
Claim 7
Dependent Claim
14 words
A shaving unit according to claim 1, wherein said width is approximately 1.25 millimeters.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |